Kelly A Robinson

US Patent:

47140461, Dec 22, 1987

Filed:

Nov 20, 1985

Appl. No.:

6/799769

Inventors:

Bruce B. Steele - Wyandotte MI
Allen J. Rushing - Webster NY
Kelly S. Robinson - Rochester NY

Assignee:

Eastman Kodak Company - Rochester NY

International Classification:

G03G 1509

US Classification:

118657

Abstract:

A magnetic brush applicator for use in an electrographic reproduction apparatus for applying a magnetic developer to a recording element comprises a cylindrical non-magnetic sleeve having a rotatably driven magnetic core piece positioned therein. According to the invention, the axis of rotation of the magnetic core piece is displaced from the sleeve axis, such displacement being toward a development zone at which the applicator applies developer to the recording element. In a preferred embodiment, the rotational axis of the core piece lies in a plane passing through the sleeve axis, such plane being angularly displaced with respect to a second plane connecting the sleeve axis and the line of closest contact between the sleeve and recording element. Such angular displacement is between 0. degree. and 20. degree. in a direction upstream of the second plane as determined by the directioh of core piece rotation.